Every firearm is a rule unto itself. Some will be stellar, some will be good, some should have never left the factory. That's the way it was and is.
I do think the most recently produced firearms from most manufacturers should be given close scrutiny before purchasing. As a result of the panic that has persisted for two years now, so many firearms and ammo manufacturers have been trying to make as many things as possible, usually with reduced staffing, in order to meet demand. This is a recipe for poorly made firearms and ammo to leave the factory. In other words, the buyer needs to exercise due diligence when considering a purchase.